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Finding the Fourth Proportional to 133,093.40, 199,640.10 and 79,949.30

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Solution

The fourth proportional to 133,093.40, 199,640.10 and 79,949.30 is: 119,923.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,093.40 : 199,640.10 = 79,949.30 : x
  2. Step 2: Convert to fraction form
    133,093.40/199,640.10 = 79,949.30/x
  3. Step 3: Cross multiply
    133,093.40x = 199,640.10 × 79,949.30
  4. Step 4: Simplify right side
    133,093.40x = 15,961,086,246.93
  5. Step 5: Solve for x
    x = 15,961,086,246.93/133,093.40
  6. Step 6: Final answer
    x = 119,923.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.